如图表示某草原生态系统的食物网，请椐图回答问题．

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(1)His sister gets up at h ____ past six in the morning.
(2)Mr and Mrs Wang go to work by s____ every day.
(3)My home is about 5 k____ from our school.
(4)He always gets early ,he is n____  late for work.
(5)The classroom is too n____  , I can't hear you.

图甲所示，是探究冰和蜡的熔化过程的实验装置。器材有：冰、蜡、热水瓶、试管、烧杯、铁架台（带铁夹）、搅棒、秒表、温度计、水。

读漫画“大难临头”及材料，回答下列问题。

沙尘暴也称沙暴或尘暴，指的是强风将地面尘沙吹起使空气很混浊，水平能见度小于1公里的天气现象。中国西北地区是沙尘暴高发区之一，近年来，我国西北地区沙尘暴呈加重趋势，并危及到我国北方大部分地区。

Don't always        the boy too hard，or he may make mistakes．